<p title="si on chantait">This paragraph should have a green background.</p>
<q xmlns="http://www.example.org/a" a:title="si nous chantions">This paragraph should be unstyled.</q>
<r xmlns="http://www.example.org/a" a:title="si on chantait">This paragraph should have a green background.</r>
<s xmlns="http://www.example.org/b" b:title="si on chantait">This paragraph should have a green background.</s>
<t xmlns="http://www.example.org/b" b:ti="si on chantait">This paragraph should be unstyled.</t>